[task/composer-compatibility] Minor changes that will break extension BC

PHPBB3-11840
[ticket/11840] Fix regex

PHPBB3-11840
[ticket/11840] Use generic information in the test extension

Not sure why I had my name/info in these files...

PHPBB3-11840
[ticket/11840] Correct Moo test extension composer

PHPBB3-11840
Merge pull request #1742 from EXreaction/ticket/11840

Ticket/11840 Refactor the extension metadata class
[ticket/11885] Add migration files for 3.0.12-RC2 and RC3 and 3.0.12

PHPBB3-11885
[ticket/11885] Fix migration files for 3.0.12

PHPBB3-11885
[ticket/11885] Use conditional in update_data()

PHPBB3-11885
Merge pull request #1749 from imkingdavid/ticket/11885

[ticket/11885] Add migration files for 3.0.12-RC2 and RC3 and 3.0.12
[ticket/11885] Fix migrations error

PHPBB3-11885
Merge pull request #1750 from EXreaction/ticket/11885

[ticket/11885] Fix migrations error
[ticket/11894] Fix typo in "Delete post" option

PHPBB3-11894
Merge remote-tracking branch 'prototech/ticket/11894' into develop

# By Cesar G
# Via Cesar G
* prototech/ticket/11894:
  [ticket/11894] Fix typo in "Delete post" option